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I suppose I was thinking of it like this:
If I was going to buy a pair het toffees to breed, I would hope to get 25% toffee, 50% het toffee, and 25% normal. I wouldn't know which of the remaining offspring carried the toffee gene because they're all phenotypically normal, as toffee isn't a visual heterozygous mutation like mojave, pastel, or any other incomplete dominant ("co-dom" = ). I wouldn't be sure of what is normal or what is het for toffee. However, if I were breeding a toffino to toffino instead of het toffee to het toffee, for example, I would know exactly what all of the offspring are. The genetic breakdown would be: 25% toffee, 50% toffino and 25% albino. No question as to what the genetics are, because everything is visual. Its always good to be sure of the offsprings' genetics, right? 
Lets say I had a clutch from a toffino male X toffee female pairing. Statistically, I would get the same 25% toffees as I would with a het to het pairing, but I would also get 25% toffinos from that clutch. Yeah, 50% will be het for either albino or toffee, but the toffinos are a sure thing compared to the het toffee X het toffee route.
It is NOT like adding albino to the mix will compromise the integrity of the toffee allele. It seems if I was planning to get a pair of hets to make a toffee, getting a pair of cheaper or similarly priced toffinos would be a no brainer. I'd get the toffees I wanted, while getting the benefits of certainty in the genetics of the remaining offspring. No possible hets to worry about selling, because I have certainty on my side. 
Granted, if my goal is to make visual toffee combos, I really need to get a visual animal thats homozygous for the toffee gene. It would be a pain to work on combos without it, but not impossible necessarily. No matter how its put out there, the albino genetics adds a bit, or a lot, of certainty when working with these allelic recessives.
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